CAJ | 학술논문

对海水淡化过程产生的浓海水进行再脱盐，可进一步提高淡水回收率，并有效避免优质化学资源的浪费和对海洋生态环境的污染。本文介绍了多效蒸馏、共晶冷冻结晶、电渗析、膜蒸馏、膜结晶等浓海水再脱盐技术的原理、特点、应用实例和新进展，并对比分析了各种技术的优势和存在的不足，对基于多种热膜集成过程的浓海水“零排放”和综合利用技术进展作了重点讨论。最后指出，除相对成熟的多效蒸馏法和电渗析法外，其他多数浓海水再脱盐技术仍处于实验研究阶段，将反渗透与可再生能源驱动的膜蒸馏技术进行耦合发展高效盐化工将是浓海水处理领域的重要方向。
대해수담화과정산생적농해수진행재탈염，가진일보제고담수회수솔，병유효피면우질화학자원적낭비화대해양생태배경적오염。본문개소료다효증류、공정냉동결정、전삼석、막증류、막결정등농해수재탈염기술적원리、특점、응용실례화신진전，병대비분석료각충기술적우세화존재적불족，대기우다충열막집성과정적농해수“령배방”화종합이용기술진전작료중점토론。최후지출，제상대성숙적다효증류법화전삼석법외，기타다수농해수재탈염기술잉처우실험연구계단，장반삼투여가재생능원구동적막증류기술진행우합발전고효염화공장시농해수처리영역적중요방향。
Re-desalting of concentrated seawater produced from seawater desalination process can further improve the recovery rate of freshwater and avoid wasting the high quality mineral resources and eliminate pollution to the marine environment. This paper reviewed the following techniques particularly:multi-effect distillation,eutectic freezing crystallization,electrodialysis,membrane distillation and membrane distillation-crystallization. The principle,applications,advantages and shortcomings of these techniques were analyzed. The development of comprehensive utilization and“zero liquid discharge” of concentrated seawater based on diverse hot-film integration process were discussed. Except for the relatively mature multi-effect distillation and electrodialysis,most of other techniques are still in the laboratory stage. This paper indicated that membrane distillation driven by renewable energy coupled with reverse osmosis developing efficient salt chemical industry would be one of the most promising methods of concentrated seawater desalination.